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Career ratings for: Fischer, Jo

  Date of rating  

World Rank Rating +/- Age
10/31/1991#1253234275
11/30/1991#1273233975
12/31/1991#1276234175
01/31/1992Inactive233979
02/29/1992Inactive233779
03/31/1992#1634230475
04/30/1992#1662229875
05/31/1992#1658230175
06/30/1992#1680230175
07/31/1992#1605231375
08/31/1992#1624231475
09/30/1992#1636231575
10/31/1992Inactive233786
11/30/1992Inactive233286
12/31/1992Inactive233886
01/31/1993Inactive229283
02/28/1993Inactive229083
03/31/1993Inactive226977
04/30/1993Inactive226777
05/31/1993Inactive226877
06/30/1993Inactive226877
07/31/1993Inactive227577
08/31/1993Inactive227677
09/30/1993Inactive227677
10/31/1993Inactive229582
11/30/1993Inactive229482
12/31/1993Inactive229582
01/31/1994Inactive226086
02/28/1994Inactive225886
03/31/1994Inactive225682
04/30/1994Inactive225382
05/31/1994Inactive225882
06/30/1994Inactive225782
07/31/1994Inactive226482
08/31/1994Inactive226482
09/30/1994Inactive226482
10/31/1994Inactive225885
11/30/1994Inactive225985
12/31/1994Inactive225985

These ratings, calculated for Fischer, Jo, incorporate all games (against rated opponents) played in the year before the "Date of rating", along with the ratings that were already calculated one year previously. If a player has an insufficient number of games in recent years, there may be gaps in the list, even though you may see ratings listed on previous and/or subsequent dates. Whenever a player has played no rated games for three straight years, or dies, they are removed from the list.

Definition of columns in the above list:

Date of rating is the "effective date" of the rating. The rating calculation does not include any games occurring after the "Date of rating".

World Rank refers to the player's world rank on that date.

Rating is the calculated rating for the player, as of the "Date of Rating". This represents the player's estimated strength on the following day.

+/- is the standard deviation of the player's rating estimate. It is based on a geometric average of the number of rated games played in past years. Players who play very frequently will have a smaller +/- value, indicating a greater confidence in the accuracy of their rating. Players whose +/- value exceeds 76 are classified as "Inactive" due to their infrequent play against rated opponents. Mathematically, a player's rating is an estimate of their exact strength on the day after the "Date of Rating". The +/- value represents the standard deviation of that estimate; the player's true strength on that date should be within one standard deviation of their calculated rating approximately 68% of the time, and within two standard deviations of their calculated rating approximately 95% of the time.

Age is the player's exact age in years, on the "Date of Rating". If a player's age is displayed as a link, that means that this rating was active at the time of their next birthday. Click on the link to see the sorted list of all players' ratings on their birthdays when turning that same age.

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